64641411 has 12 divisors (see below), whose sum is σ = 93737592. Its totient is φ = 42925056.

The previous prime is 64641407. The next prime is 64641419. The reversal of 64641411 is 11414646.

64641411 is a `hidden beast` number, since 6 + 4 + 641 + 4 + 11 = 666.

It is not a de Polignac number, because 64641411 - 2² = 64641407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64641419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11661 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (7811466).

Almost surely, 2^64641411 is an apocalyptic number.

64641411 is a deficient number, since it is larger than the sum of its proper divisors (29096181).

64641411 is a wasteful number, since it uses less digits than its factorization.

64641411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28210 (or 28207 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 64641411 is about 8039.9882462601. The cubic root of 64641411 is about 401.3318335436.

It can be divided in two parts, 6464 and 1411, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 64641411 in words is "sixty-four million, six hundred forty-one thousand, four hundred eleven".